Gas chromatography (GC) is a frequently used analytical method for quantifying volatile compounds in mixtures. It is characterized by a particularly high resolving power in combination with high sensitivity and short measurement times. Like other chromatography methods, GC has a mobile phase, usually helium or nitrogen, and a stationary phase, a solid adsorbent (column), which can have different adsorption properties depending on the application. In the LASE-MR group, GC is used to characterize the gas phase of solid-liquid equilibria of formaldehyde and the reactions in cold plasma, among other applications.

Electron paramagnetic resonance (EPR) spectroscopy is the equivalent of nuclear magnetic resonance, but it measures the spins of unpaired electrons. EPR spectroscopy is particularly useful for the study of free radicals, transition metal ions, and other paramagnetic species in biology, chemistry, and materials science. In particular, we apply EPR spectroscopy to the study of radical matrices synthesized as part of the Overhauser DNP project.